Hi, I tried sooo many, many ways in the last weeks and even crashed a Mac Mini by trying. My goal: using Visual Studio for coding and running MacOS whereever for XCode. Because I'm developing with Unity a 3D game this was a challenge too. Firstly I bought an iMac, the small one. But it was to slow for my purposes. Next I installed my development stuff on my old Mac Mini and tried to develop via Remote Access (VNC) and Visual Studio. That was an even slower working and two weeks ago the Mac Mini harddisk crashed. So I tried the vmWare way. I had this idea earlier but never got a virtual machine running. Until last week. Now I'm happy, happy, happy. I'm using a "above average" PC and the virtual machine is running fast as hell. Even 3D development without Quarz & Co. is possible (not beautiful but really fast enough for proper development). Because this is asked so often everywhere I want to share what I did to get it running. What do you need? a) an original copy of OS X 10.5.6+, if you dont own one please left this thread now...all the rest will be illegal! b) iPC OSx86 Universal 10.5.6 Install Disc, get it from the "usual" places c) vmWare Workstation 30 day trial (only needed for image creation) d) a moderate PC First you need to create a new vmWare machine and install iPC OSx86 Universal 10.5.6 on it. This is the tricky part. This guide helped me a lot: http://pcwizcomputer.com/index.php?option=com_content&task=view&id=36&Itemid=32 So be warned, this can be a little bit of trial and error. Two points that I dont realized for many hours: 1) you must have the ISO of iPC mounted in vmWare, even after the installation, otherwise the machine will not boot 2) dont touch any key when the machine starts (and is counting backwards from 5) - pressing return for a skip of the counter results into a crash...no idea why After you got MacOS running install the VMware Tools for OSx86, you can get it from here: http://pcwizcomputer.com/index.php?option=com_content&task=view&id=33&Itemid=32 Now setup a better, permanent screen resolution: http://pcwizcomputer.com/index.php?option=com_content&task=view&id=31&Itemid=32 At last update to the latest MacOS revision 10.5.7 simply be running the MacOS updater. No crack or hack is needed. And thats it! I switched from "NAT" to bridget networking in MacOS, but thats up to you. You can setup your virtual MAC now like you would do it with a real MAC. I'm using a shared netdrive now for developing in Visual Studio Express and C# and running Unity and Xcode in the virtual machine. Of course you can develop in C++ too You dont need vmWare workstation anymore, the player will do it. I'm developing now for a week with only a single crash. And even Unity 3D development is very possible. Happy Windows-developing! Axel